Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '57e18f6d8e95377398edee1adb9f0413bcd40ef4a56c51652b8e998831c3dae0' 
  AND token = '32Q7cO1IVjFgF9i4Ogo2lde+GqfhCffrqbNfYk6Ivio=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}